baber/WOPTO huggingface dataset:
Patent CA-1078599-A (CA)
Inventor: ESPENSCHEID WILTON F
IPC: E21B41/02
Filed: 1977-10-18
Granted: 1980-06-03
Abstract: CALCITE CONTROL IN AN                    IN SITU LEACH OPERATION           Abstract of the Disclosure A method of controlling calcite in an in situ leaching operation by retarding the growth of calcite crystals in the lixiviant only for the resident time that the lixiviant is in a critical area of the leach circuit and then allowing the calcite to precipitate from the lixiviant in a noncritical area. A chemical inhibitor, e.g., sodium hexamethaphosphate, is added to the lixiviant as the lixiviant enters a critical area, e.g., from the bottom of a production well to surface processing equipment. The inhibitor is added to the lixiviant in an amount sufficient only to retard calcite precipitation while the lixiviant moves through a critical area but not to seriously impede calcite precipitation after the lixiviant exits the critical area.
Patent CA-1077247-A (CA)
Inventor: YOUNG DAVID W
IPC: F01L3/24
Filed: 1977-12-02
Granted: 1980-05-13
Abstract: ABSTRACT OF THE DISCLOSURE           A tool for imparting force to a mechanical element located in a confined area having an impact member for receiving and transferring force applied to it, an end member engageable with the mechanical element, and a connector rotatably joining the end member and the impact member, the end member and the impact member having mating faces at least one of which lies in a plane oblique to the force transmitting axis thereof for applying a force to the mechanical element from an angular position of the impact member relative to the end member by selective relative rotation of the impact member and the end member.
Patent CA-1052984-A (CA)
Inventor: FERRELL LARRY J
IPC: C04B35/56
Filed: 1978-02-20
Granted: 1979-04-24
Abstract: ABSTRACT          A powder, for example a mixture of titanium carbide and alumina powder, is densified into a fine grained sintered ceramic by applying a first constant physical pressure to the powder and heating it at a first predetermined temperature rate to onset of powder shrinkage, and then densifying the powder through at least two sequentially decreasing densification rates by variation of the applied pressure.
Patent CA-1078595-A (CA)
Inventor: SNELLMAN DONALD L
IPC: D07B1/02
Filed: 1978-04-17
Granted: 1980-06-03
Abstract: THERMALLY STABLE HELICALLY PLIED CABLE           Abstract of the Disclosure The cable includes continuous glass filaments which are helically plied in rovings at a constant helical angle from cable center to outer surface and bonded together in elastomeric material. When heated, thermal elongation of the filaments is opposed by simultaneous radially directed thermal volumetric expansion of the elastomeric material.           Thus, with respect to overall cable length, thermal elonga-tion of the cable is opposed by a simultaneous increase in cable cross sectional area such that thermal elongation effects are controllable, dependent upon the thermal expan-sion properties of the filament and elastomeric materials used, by controlling the helical angle at which the filaments are plied to obtain either expanding, contracting or constant length cables, as desired. Thermal contraction effects produced by cooling the cable also are controllable by controlling the helical angle. In some high tensile load cable applications, the helical angle additionally may be related to tensile load, depending upon the modulus of elasticity of the filaments used. The invention is par-ticularly adapted to helically plied glass fiber cables which are thermally stable over a wide range of temperatures.
Patent CA-1073956-A (CA)
Inventor: HAFNER EUGENE R
IPC: F16C35/073
Filed: 1978-06-26
Granted: 1980-03-18
Abstract: ABSTRACT OF THE DISCLOSURE         A bearing locking assembly has a sleeve that fastens an inner race ring of an anti-friction bearing of either a ball or roller design to a rotatable shaft.          The sleeve is split longitudinally, enabling the sleeve to be compressed radially for slipping axially within a bore of the ring.  Upon release of the compression, the sleeve expands in diameter so that a central portion of the sleeve keys the sleeve axially in place within the ring bore.  The sleeve, with the ring mounted thereon, slips axially upon the shaft.  External cylindrical sur-faces at the end portions of the sleeve are eccentric, and internal cylindrical surfaces at the end portions of the ring bore are eccentric.  Angular rotation of the ring relative to the sleeve causes engagement of the eccentric cylindrical surfaces to tighten the sleeve about the shaft, while the concentric central portions of the sleeve and the ring maintain the ring centric relative to the shaft.  The bore opening of the sleeve can be machined to receive various size shafts to adapt one size of bear-ing ring to any one of a variety of the shaft sizes.     -1a-
Patent CA-1095509-A (CA)
Inventor: DZIEDZIC CHESTER J
IPC: F28F3/00
Filed: 1978-07-05
Granted: 1981-02-10
Abstract: AND HEAT RECUPERATIVE APPARATUS IN-CORPORATING SAME               ABSTRACT OF THE DISCLOSURE Layered composite cross-flow ceramic recuperators having minimal leakage between layers and consequent high efficiencies are utilized for industrial waste heat recovery in an apparatus in which the ceramic recuperator is surrounded by a metallic housing adapted for coupling to the metallic fittings of existing furnaces, calciners, ovens and preheaters.  The ceramic recuperators are formed from stacks of bi-sectioned ribbed layers, the sections of each layer being sealed together to minimize leakage of the heat transfer fluids between layers, and thus to increase the efficiency of the heat transfer.
Patent CA-1119758-A (CA)
Inventor: KOLB GUENTER
IPC: D21H19/24
Filed: 1978-07-19
Granted: 1982-03-16
Abstract: ABSTRACT OF THE DISCLOSURE         Salts of organic or inorganic acids with polyimide amines wherein the polyimide amines are obtained by reaction of copolymers of maleic acid anhydride and 2, 4, 4-trimethyl-1-pentene with a mixture of a diamine having a tertiary and a primary amino group and ammonia or a primary monoamine and at least 80% of the anhydride groups having been converted into the corresponding imide groups are used as surface sizing agents for paper.
Patent CA-1113654-A (CA)
Inventor: MELCHER RONALD E
IPC: B22C1/02
Filed: 1978-08-04
Granted: 1981-12-08
Abstract: ABSTRACT          Salts of lithium or magnesium and an organic carboxylic acid, especially lithium acetate and/or magnesium acetate, are added to green molding sand to improve the pro-perties of hot green molding sand at 110-160°F (43.3-71.1°C).          Magnesium acetate is preferred, especially in green molding sands used for casting steel.
Patent CA-1104795-A (CA)
Inventor: BURANT WALTER JR
IPC: C02F3/12
Filed: 1978-08-21
Granted: 1981-07-14
Abstract: ABSTRACT OF THE DISCLOSURE A process for removing a substantial portion of the organic and/or inorganic volatile substances from an odorous gas stream, which comprises passing said gas stream through at least one gas scrubber containing an aqueous suspension of biological solids in a concentration between about 50 mg/l and 20,000 mg/l and activated carbon in a concentration between about 50 mg/l and 20,000 mg/l.
Patent CA-1117542-A (CA)
Inventor: COUPLAND KEITH
IPC: C10L1/14
Filed: 1978-09-01
Granted: 1982-02-02
Abstract: ABSTRACT OF DISCLOSURE Hydrocarbon soluble organo molybdenum complexes obtained the reaction product of a hydrocarbyl substituted thio-bis-phenol, e.g. 2,21-thio-bis (4-iso-nonyl phenol), with a molybdenum compound, e.g. molybdic oxide in the presence of a suitable promoter, e.g. ethanol-anine, are useful hydrocarbon additives, particularly in combination with an oil-soluble sulfur donor. e.g. a metal dialkyl dithiophosphate to provide an additive combination for lubricating oils since the lubricating compositions comprising these co-additives exhibit improved anti-friction and anti-wear properties.
Patent CA-1125988-A (CA)
Title: Process for preparing alkali metal mono- and  dibasic periodates
Inventor: HILLIS JAMES E
IPC: C01B11/22
Filed: 1978-09-06
Granted: 1982-06-22
Abstract: ABSTRACT OF THE DISCLOSURE          A process for preparing an alkali metal mono-basic or dibasic periodate or their mixtures by reacting an alkali metal tribasic, tetrabasic or pentabasic periodate or their mixtures with an acidic substance at a temperature of from 0° to 350°C, a pressure of from 1 to 100 atmospheres, and a molar ratio of periodate to acidic substance of from 1:1 to 1:1000.  The acidic substances that can be used are water, carbon dioxide, carbonic acid, sodium and potassium dichromates, tungsten trioxide, sodium bicarbonate, boron trioxide and orthoboric acid, and their mixtures.           By this process, the desired products are prepared in good yields, and in contrast to prior art processes, the resulting by-products can be recovered and used as reactants in other processes or for neutralizing waste acid or process acid.
Patent CA-1065223-A (CA)
Inventor: KRZEWINSKI HENRIETTA K
IPC: A61B46/20
Filed: 1978-10-20
Granted: 1979-10-30
Abstract: Abstract of the Disclosure A surgical drape comprising a sheet of flexible, drapable material.  The sheet has a main portion at one end thereof and a pair of spaced wings at the other end thereof.          The wings extend outwardly from a central region of the sheet and define a gap in the sheet.  A flap is attached to at least one of the wings and is transversely extendible from the one wing so as to cover at least a portion of the gap and to lie in contacting relationship with at least part of the other of the pair of wings.  The flap on the one wing is folded to overlie the said one wing.  The said one wing with its said overlying flap and the other of the two spaced wings are each folded longitudinally a plurality of times in a sequence of folds toward the center of the drape.  The first fold in the sequence is a reverse fold and the last fold in the sequence is a forward fold whereby, when the folding sequence is com-pleted, each folded wing portion overlies a central portion of the sheet.  A part of the main portion is folded longitudinally a plurality of times in a sequence of folds toward the center of the drape, the first fold in the sequence being a reverse fold and the last fold in the sequence being a forward fold whereby, when the folding sequence is completed, the folded part of the main portion comprises a stack of folds overlying the central portion of the sheet.
Patent CA-1120471-A (CA)
Inventor: WEINER BEN-ZION
IPC: A61P31/12
Filed: 1978-10-31
Granted: 1982-03-23
Abstract: ABSTRACT            The invention provides novel 1- or 2 adamantylmethyl hydrazines of the general formula A                         A         In this formula Ad is 1- or 2-adamantyl, R1 and R2 are the same or different and are eah hydrogen or a lower unsubstituted or substituted alkyl group of 1-4 carbon atoms; R3 and R4 are the same or different and are each hydrogen, an unsubstituted or substituted radical being a lower alkyl group of 1-4 carbon atoms a lower alkanoic acid radical of 2-4 carbon atoms or a lower alkyl ester thereof, adamantyl, aryl, aralkyl in which the alkyl moiety has 1-4  carbon atoms or R3 and R4 together with the nitrogen to which they are attached form an unsubstituted or substituted heterocyclic radical of aromatic character; or R3 and R4 together with the nitrogen atom to which they are attached form a cyclic radical of non-aromatic character.         The invention further provides pharmaceutically acceptable acid addition salts of the above compounds.         Several methods of preparation of the new compounds are described.      The novel compounds according to the invention possess valuable antifungal (human and plant), antiviral, antiprotozoal and antimicrobial properties.
Patent CA-1115973-A (CA)
Title: Coupling between mechanical elements
Inventor: NORMARK OLOV M
IPC: F16D1/00
Filed: 1978-11-06
Granted: 1982-01-12
Abstract: ABSTRACT OF THE DISCLOSURE           A coupling, arranged to form a frictional joint between two mechanical elements, comprising of a tubular contact member, arranged to take up a non-deformative frictional contact with an element to be attached by means of a first peripheral surface when a mainly plane spring ring, extending from the opposed peri-pheral surface mainly perpendicularly to the longitudinal axis of the element to be attached, is twisted or tilted by means of a manually operated force applying member to an inclined relation-ship to said longitudinal axis, said tubular contact member having a longitudinal section causing the applied force from the spring ring to be equally distributed over the contact surface with the element to be attached.
Patent CA-1112721-A (CA)
Inventor: KOIZUMI AKIO
IPC: H02M3/325
Filed: 1978-11-21
Granted: 1981-11-17
Abstract: ABSTRACT OF THE DISCLOSURE         A switching regulator includes a DC voltage source having a pair of DC output terminals, a switching transformer having first and second primary windings connected in series, a magnetic core and a secondary winding, a first switching tran-sistor connected in series between the pair of DC output terminals through the first primary winding, a second switching transistor connected in series between the pair of DC output terminals through the first and second primary windings, a rectifier circuit connected across the secondary winding.  A pulse width modulator is provided to produce a PWM (pulse width modulated) control signal the duty of which is proportional to the voltage or the rectifier circuit and the PWM control signal is selectively supplied to one of the first and second switching transistors in accordance with the low or high circumstance of the load.  Further, a reference pulse signal having a standard pulse width is provided, which is compared with the PWM control signal so as to selectively supply the PWM control signal to one of the first and second switching transistors.
Patent CA-1101467-A (CA)
Inventor: JONES THOMAS C
IPC: B62D59/00
Filed: 1978-12-27
Granted: 1981-05-19
Abstract: ABSTRACT OF THE DISCLOSURE In a tank trailer having a longitudinally extending frame member, a rear wheel assembly extending transverse to the longitudinal member and a front wheel assembly, rotatable and sealed connections and structures are provided between the longitudinal member and the front wheel assembly whereby tight turns are reliably made on rough land, such as furrowed fields.
Patent CA-1080005-A (CA)
Inventor: NALLEY DAVID J
IPC: B25D16/00
Filed: 1978-12-29
Granted: 1980-06-24
Abstract: FORWARD BIASED SWITCH FOR A    REVERSIBLE HAMMER DRILL     ABSTRACT OF THE INVENTION    A hammer drill having a reversible switch which is forward biased normally to prevent the drill from operating in the hammer mode while the switch is in the reverse position.  This is a precaution to prevent damage to the clutch teeth which are designed for ratchet action when the tool is operated in the forward direction, but will lock down in reverse to stall tool or damage the mechanism.
Patent CA-1110682-A (CA)
Title: Bouton-poussoir de commande d'un organe de contact
Inventor: DEBAIGT JEAN
IPC: H01H13/58
Filed: 1979-02-01
Granted: 1981-10-13
Abstract: L'invention concerne un bouton-poussoir comprenant à l'intérieur d'un boîtier une touche de commande d'un poussoir actionnant un organe de contact commandé comportant une position de repos et une position de travail, ladite touche étant disposée coulissante et amovible au travers d'une des faces du boîtier. Le bouton-poussoir est caractérisé en ce que la touche de commande est amovible au travers de ladite face du boîtier et munie d'un organe de sélection du positionnement de l'organe commandé à la suite d'une action sur la touche, ledit organe de sélection comportant une première position dans laquelle la touche commande une impulsion de l'organe commandé et une deuxième position dans laquelle la touche commande un enclenchement de l'organe commandé. L'invention s'applique à l'équipement des tableaux et pupitres de commande d'appareils électriques.
Patent CA-1121028-A (CA)
Inventor: KESSEL GERD
IPC: G05D16/20
Filed: 1979-03-16
Granted: 1982-03-30
Abstract: Abstract of the Disclosure A pressure regulator has at least one solenoid valve operated by electrical signals connected to a container the actu-al pressure of which is indicated by a pressure electric trans-ducer. A comparator generates a regulation signal which is the difference between the actual pressure and a command pressure signal.  A regulator is connected to the comparator for generat-ing a control signal to the solenoid valve in such a manner that the valve member of the solenoid valve is adjustable in a stable manner between intermediate positions within a range between the open and closed positions of the valve such that throttled pres-sure media continuously flows through the valve.  The valve ad-justment signal can be a continuously variable direct voltage which is proportional to the output signal of the regulator and may be a rectangular or saw-toothed voltage with a frequency ex-ceeding the maximum actuating frequency of the solenoid valve.          The regulator has an integral function and is preferably a pro-portional integral regulator.  The container may be provided with both inlet and outlet valves for control of the pressure in the container and the regulator produces separate control signals for the inlet and outlet valves.
Patent CA-1126022-A (CA)
Inventor: KOHM RICHARD C
IPC: G09F21/10
Filed: 1979-04-18
Granted: 1982-06-22
Abstract: SIGN STRUCTURE     ABSTRACT OF THE DISCLOSURE      A sign structure which may be supported from aircraft and especially helicopters.  The structure is comprised of three distinct sections which may he compactly transported and then easily assembled and connected beneath an aircraft and around the landing gear thereof.  The structure  provides an aerodynamically stable frame onto which novel electrically controlled light sources may be attached in a rectangular matrix for displaying a desired illuminated message.
Patent CA-1115791-A (CA)
Inventor: LEWIS MEIRION F
IPC: H03H3/08
Filed: 1979-05-23
Granted: 1982-01-05
Abstract: ABSTRACT     A surface acoustic wave device comprises a quartz substrate having a flat surface carrying one or ore transducers for launching and receiving surface acoustic waves along a track in the flat surface.   In this invention the flat surface lies in a plane rotated about a Y axis by plus or minus 41° to 47° from the Z plane and the track is aligned 61° to 67° from the Y axis.
Patent CA-1129533-A (CA)
Title: Optical modulators
Inventor: GORDON KEVIN S
IPC: G02F1/01
Filed: 1979-06-01
Granted: 1982-08-10
Abstract: IMPROVEMENTS IN OPTICAL MODULATORS            Abstract of the Disclosure An optical modulator has two closely spaced optical fibre end surfaces.  The separation of the surfaces can be altered in response to an applied modulating signal.  Light propagating towards the modulator along one fibre is partially reflected from the two fibre end surfaces, the two reflected beams interfering according to their phase difference.  Alternatively, the modulator may be operated in a transmissive mode.  To obtain modulation, one of the fibres is longitudinally vibrated.  A method of operating a modulator in a wavelength selective mode is also described.
Patent CA-1144735-A (CA)
Inventor: KOSHIKAWA TAKAO
IPC: B22D11/08
Filed: 1979-06-18
Granted: 1983-04-19
Abstract: ABSTRACT OF THE DISCLOSURE           The method of sequential continuous-casting of the different grades of molten steel according to the present invention comprises the steps of:  stopping the pouring of a first grade of molten steel into a mold; immersing a cooling material consisting of steel stock or a steel structure slightly smaller than the inner cross-sectional area of the mold by way of guiding jigs fastened to said cooling material; forming a solidified phase around said cooling material; and merging said solidified phase in a solidi-fied shell developed from the wall of the mold to form a solidi-fied layer shutting the upper portion off the lower portion of the first grade of molten steel.         According to the process, the pouring the second grade of molten steel is started before the solidified layer for shutting the upper portion off the lower portion of the first grade of molten steel as described above and the surface of the first grade of molten steel is solidified completely, and at the same time, the drawing of the cast slab is started again and the change-over to the normal continuous casting of the second grade of molten steel is effected.
Patent CA-1111228-A (CA)
Inventor: RICHARDSON J MARK
IPC: C01G21/16
Filed: 1979-09-26
Granted: 1981-10-27
Abstract: HALOGENATION OF LEAD SULFIDE            ABSTRACT   Lead sources, and particularly lead sulfide concentrates, are halogenated utilizing a halogen gas in a dry atmosphere at a relatively low temperature to selectively halogenate the lead.  The process is improved by effecting the halogenation in a fluidized state in a fluidized bed re-actor, the fluidized state of the lead sulfide being accomplished by intro-ducing a mixture of halogen gas and an oxygen-containing gas at a rate sufficient to maintain the lead sulfide in the desired fluidized state. Thereafter, metallic lead may be obtained by leaching the halogenated mix-ture with brine, filtering to separate elemental sulfur and residue from soluble lead halide.  The soluble lead halide is then crystallized and the desired metallic lead is obtained by fused salt electrolysis.
Patent CA-1115520-A (CA)
Title: Toy with spring-operated speed regulated  motor mechanism
Inventor: KELLEY WILLIAM J
IPC: A63H17/12
Filed: 1979-10-01
Granted: 1982-01-05
Abstract: ABSTRACT OF THE DISCLOSURE   A toy having a pivotable component in the form of a construction wheel loader having a shovel, the toy including a manually actuable handle cocking a spring coupled to a slidable member having a rack portion for oper-ating the shovel.  Movement of the slidable member during cocking of the handle simultaneously moves a coupler connected to a piston slidable axially within a stationary closed ended cylinder.  The piston has a minute aperture in the face thereof with a larger aperture in the skirt thereof with the apertures being on opposite sides of the piston seal.  A locking lever coasts with the coupler for retaining the parts in the powered position against the force of the spring.  Manual release of the locking lever permits the spring to urge against the slidable member with the two apertures in the piston providing speed regulation during movement of the piston into the cylinder for moving the slidable member gradually.
Patent CA-1107227-A (CA)
Title: Pallet locating and clamping mechanism for a transfer  machine
Inventor: MYERS DOUGLAS
IPC: B23Q39/04
Filed: 1979-10-05
Granted: 1981-08-18
Abstract: Abstract of the Disclosure In transfer apparatus for advancing work-supporting pallets from one work station to a successive work station, a locating and clamping mechanism for precisely positioning a pallet at each work station and securing the pallet thereat so that an operation can be performed on work that is sup-ported on the pallet.  The locating and clamping mechanism consists of a plurality of lift-pin members, driven by an actuator assembly ,  and movable up and down into engagement with the underside of the pallet at the work station.  At least one of the lift-pin members has a tapered head that is received in a correspondingly-tapered opening in the pallet so as to horizontally orient the pallet.  Stop means overlie the pallet at the work station so as to be engaged by the pallet upon its upward movement by the lift-pin members to clamp the pallet at a predetermined position where the work performing operation can be carried out.